From: Glen W. <gl...@je...> - 2016-09-26 13:28:59
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Actually, starting with brush based motors. My understanding below I have writing drive hardware and software before. Please verify my thinking below? 1) A brushless motor would require three PWMs while a brush motor can use just one. Both really need some type of feedback control. A brushless motor need positional feedback for commutation. It also helps to have volts/amps feedback for PWM timing open/close frequency control. A brushless motor could just have velocity feedback but the more feedback the better. 2) The AeroCore has 8 PWMs circuits. There is a questions of how you get that much feedback to it to control that many motors directly in real time? Some electronic switching frequency circuitry will need to be created to serve a a gate between the motor and the battery. I appreciate your thoughts on the above. -- Glen Wernersbach View Profile <http://www.linkedin.com/in/GlenWernersbach> Innovator and CEO MotionLABs LLC. "Making the Next Thing Happen Now!" 513-240-9929 GWernersbach@MotionLABs.io On 9/26/16, 9:08 AM, "Andrew C. Smith" <ac...@gu...> wrote: > Sorry ... late getting back to this. > > To control brushless motors you're going to need some sort of speed/position > controller. A PWM signal on it's own isn't enough. Brushless motor speed > controllers are used all over in RC hardware, they're cheap and easy to use. > Those can interface directly with the AeroCore. > > > Thanks, > > Andrew > > > > -- > View this message in context: > http://gumstix.8.x6.nabble.com/AeroCore-How-do-tp4971050p4971091.html > Sent from the Gumstix mailing list archive at Nabble.com. > > ------------------------------------------------------------------------------ > _______________________________________________ > gumstix-users mailing list > gum...@li... > https://lists.sourceforge.net/lists/listinfo/gumstix-users > |